package com.xdb.sqlparser.dialect.mysql.ast.expr;

import com.xdb.sqlparser.ast.SQLExpr;
import com.xdb.sqlparser.ast.AbstractSQLExprImpl;
import com.xdb.sqlparser.dialect.mysql.visitor.MySqlASTVisitor;
import com.xdb.sqlparser.visitor.SQLAstVisitor;

public class MySqlExtractExpr extends AbstractSQLExprImpl implements MySqlExpr {

	private SQLExpr value;
	private MySqlIntervalUnit unit;

	public MySqlExtractExpr() {
	}

	public SQLExpr getValue() {
		return value;
	}

	public void setValue(SQLExpr value) {
		this.value = value;
	}

	public MySqlIntervalUnit getUnit() {
		return unit;
	}

	public void setUnit(MySqlIntervalUnit unit) {
		this.unit = unit;
	}

	protected void accept0(SQLAstVisitor visitor) {
		MySqlASTVisitor mysqlVisitor = (MySqlASTVisitor) visitor;
		mysqlVisitor.visit(this);
		mysqlVisitor.endVisit(this);
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((unit == null) ? 0 : unit.hashCode());
		result = prime * result + ((value == null) ? 0 : value.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (!(obj instanceof MySqlExtractExpr)) {
			return false;
		}
		MySqlExtractExpr other = (MySqlExtractExpr) obj;
		if (unit != other.unit) {
			return false;
		}
		if (value == null) {
			if (other.value != null) {
				return false;
			}
		} else if (!value.equals(other.value)) {
			return false;
		}
		return true;
	}

}
